Hello, my ApolloLake board was not able to find the "romstage" in the SPI memory, because it searched in the wrong part of the memory.
___FMAP__COREBOOT_BASE was set to the relative offset within the parent section, but rdev_readat needs the *absolute* address: There was a mismatch. However, I was able to fix this problem locally by adding an additional fixed offset to fmap_top, like
diff --git a/src/lib/cbfs.c b/src/lib/cbfs.c index aa652c2..f36a499 100644 --- a/src/lib/cbfs.c +++ b/src/lib/cbfs.c @@ -230,7 +230,7 @@ static int cbfs_master_header_props(struct cbfs_props *props if (bdev == NULL) return -1;
- size_t fmap_top = ___FMAP__COREBOOT_BASE + ___FMAP__COREBOOT_SIZE; + size_t fmap_top = ___FMAP__COREBOOT_BASE + ___FMAP__COREBOOT_SIZE + 0x300000;
/* Find location of header using signed 32-bit offset from * end of CBFS region. */
But imho this shouldn't be a permanent solution!
Therefore I suggest to modify the 'fmaptool' in such way that it outputs the absolute address for (at least) ___FMAP__COREBOOT_BASE, because the 'rdev_readat()' function of the 'boot_device_ro()' needs it in this form.
What is your opinion?
Kind regards, Rolf